Belt-guide.



No. 784,987. PATENTED MAR. 14, 1905. I V J. L. GRISLER.

BELT GUIDE.

APPLICATION FILED OUT. 19, 1903.

2 SHEETS-SHEET 1.

[NVENTOR PATENTED MAR. 14, 1905.

v No. 784,987;

L L. 'GRISLBR.

BELT GUIDE.

APPLIUIATION FILED 00119, 1903.

2 SHEETS-SHEET 2 [NVENTOR fwwlbl. 6122/10' Kw m? W/FL.

Patented March 14, 190 5.

PATENT OFFICE.

JOSEPH L. CRISLER, OF PERTH, KANSAS.

BELT-GUIDE.

SPECIFICATION forming part of Letters Patent No. 784,987, dated March14, 1905.

' Application filed October 19,1903. Serial No. 177,591.

To all whom it may concern:

Be it known that I, J osErH L. CRIsLER, a citizen of the United States,residing at Perth, in the county of Sumner and State of Kansas,

have invented a certain new and useful Belt- Guide, of which thefollowing is a specification reference being had therein to theaccompanying drawings.

This invention relates to belt-pulleys, and

while especially designed for use upon traction-engines it will beapparent as the description proceeds that the belt-guide of thisinvention may be used in connection with a beltpulley and belt on anymachine, whether movable or stationary.

The object of the present invention is to provide a belt-guide which maybe moved into and out of operative relation to a belt-pulley and beltrunning thereon for the purpose of preventing the belt from running offthe pulley when the guide is properly disposed to the belt and pulley.WVhenever desired the beltguide may be shifted so as to allow the beltto be taken off the pulley and replaced thereon.

Another object of the invention is to so construct and mount thebelt-guide that it is adaptable to pulleys and belts of varying widthsand size and also adjustable relatively to its supporting-bracket,whereby the guide-rollers of 0 the belt-guide may be positioned withrelation to the belt and pulley, according to the location of thepulley.

With the above and other objects in view, the nature of which will morefully appear as 3 5 the description proceeds, the invention consists inthe novel construction, combination, and arrangement of parts, ashereinafter fully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is 4 a sectional elevation of thebelt-guide and the operating device therefor. Fig. 2 is a verticallongitudinal section through the base-plate of the belt-guide and also aportion of the supporting-bracket,showing the rock-shaft andguide-rollers, &c., in elevation. Fig. 3 is a detail perspective view ofthe segregated parts of the belt-guide. Fig. 4: is a detail sectionshowing the manner of locking or holding the operating bar or rod. Figs.5, 6, 7 and 8 are 5 respectively side, sectional, segregatedperspective, and detail cross-sectional views of a modified form ofbelt-guide embodying the same principles.

Like reference-numerals designate corresponding parts in all the figuresof the drawings.

The belt-guide contemplated in this invention comprises, essentially, abracket 1, one end of which is shaped as shown at 2 to adapt the same tobe fastened to the boiler of a traction-engine, while the outer orprojecting portion 3 of the guide is provided with one or morelongitudinal slots 4. for the reception of a corresponding number ofclamping-bolts 5, which pass through openings 6 in the baseplate 7,which rests upon a portion 3 of the bracket and is therefore movablelongitudinally of the bracket for the purpose of adjusting thebelt-guide as a whole into proper relation to the rim of thebelt-pulley, (shown at 8.)

Extending upward from the upper side of the base-plate 7 arebearing-lugs 9, the same being secured by suitable fasteners 10 to thebase-plate, as shown in Fig. 3. Mounted in the bearing-lugs 9 is arock-shaft 11, which is parallel to the shaft of the belt-pulley 8. EX-tending outward from the rock-shaft 11 are arms 12, provided at theirinner ends with sleeves 13, surrounding the rock-shaft 11, and providedwith binding-screws 14:, by means of which the arms 12 may be made faston the rock-shaft and adjusted lengthwise thereon. The outer endportions of the arms 12 are bent substantially at right angles to formelbows 15, and these are reduced, as shown at 16, to form journals, uponwhich are rotatably mounted guide-rollers 17, provided at their innerends with guard-flanges 18, the outer ends of the rollers beingrecessed, as shown at 19, to allow the retaining device or nuts 20 tolie within the body portions of the rollers, and thereby avoidprojections.

In order to operate the rock-shaft 11 and swing the arms 12, one of saidarms is prohollow cylinder provided at diametrically opposite pointswith slots 25, through which the bar 22 passes. One of its slots isslightly shallower than the other, thereby leaving a projecting lip orlug 26, which is adapted to engage either one of a pair of notches 27 insaid bar. In order to maintain the engagement between the notches andlug, a tensionspring 28 is arranged within the housing 24, said springexerting its tension to hold the bar 22 toward the lip or lug 26, asillustrated in Fig. 5. By overcoming the tension of said spring,however, and moving the bar 22 away from the lip 26 said bar may bemoved lengthwise, and the guide-rollers 17 will thereby be moved towardor away from the rim of the belt-pulley in a manner that will be readilyunderstood. g

The swinging movement of the arms 12 is limited by means of one or morestops 29, provided with sleeves 30, which embrace the rockshaft 11 andare held at any desired adjustment thereon by means of binding-screws31. Complementary stop-lugs 32 extend out from the bearing-lugs 9, inwhich the rock-shaft is journaled, said stop-lugs serving to limit therocking movement of the shaft in one direction, while faces 33 of thebearing-lugs 9 serve, in conjunction with the stops 29, to limit therocking movement of the shaft 11 in the opposite direction.

From the foregoing description it will be seen that by means of theoperating device and the manner in which the belt-guide as a whole ismounted the guide-rollers 17 may be moved toward and away from the beltand its pulley, the rollers being so positioned as to lie on oppositesides of the pulley-rim and close to or, if desired, in actual contactwith the side edges of the rim, as indicated best in Figs. 2 and 3. Theguide-rollers 17 when in operative relation to the belt-pulley cooperatewith the opposite side edges of the belt and prevent any possibility ofthe belt escaping from the pulley, the flanges 18 also assisting inretaining the belt on the pulley in case of excessive looseness of thebelt. It will also be seen that the arms 12 may be adjusted toward oraway from each other, so as to adapt them to pulleys and belts ofdifferent widths; furthermore, that the base-plate may be adjusted inand out on the supporting-bracket 1 in order to accommodate thebelt-guide as a whole to the location of the pulley; also, that byadjusting the stops 29 the limits of movement of the arms 12 may beregulated. It will also be observed that by means of the operatingdevice, consisting of the bar 22 and its guide or housing 2 1, thebelt-guide proper may be held fastened in either an operative orinoperative position for the purpose specified.

A simplified form of belt-guide embodying the same principles as thathereinabove described is illustrated in Figs. 5, 6, 7, and 8, theprincipal difference residing in the means for adjusting the bearings ofthe belt-guidebn the bracket and the means for limiting the swingingmovements of the rock-shaft and rollercarrying arms. In said figures itwill be noted that the base-plate is dispensed with and that thebearings are connected directly with the portion 3 of the bracket bymeans of bolts 34, which pass through the members of each bearing andalso through longitudinal slots 35 in the bracket, so that by looseningsaid bolts the bearings for the rock-shaft 11 may be moved inward andoutward on the bracket in order to bring the guide-rollers 17 intoproper relation to the belt and pulley. The arms 12, which carry therollers 17, may also be formed integrally with the rock-shaft 11, asclearly shown in Figs. 6 and 7. In the modified form of belt-guide eachbearing for the rock-shaft 11 is composed of two members 36 and 37 inthe form of elbow-straps, which embrace the shaft 11 at opposite sides,as best shown in Fig. 8, the upper portions of the bearing members beingconnected by bolts or other suitable fasteners 38, while the opposite orlower ends are held together and clamped against the portion 3 of thebracket by means of the bolts 34. The member 36 is also provided with aninwardly-extending flange 39, which rests against the upper surface ofthe part 3 of the bracket, so as to properly position the two members ofthe bearing with relation to the bracket. In order to limit the upwardswinging movement of the arms 12 and stop the guide-rollers 17 at theproper point, the bearing member 36 is made wider than the member 37 asshown in Figs. 6 and 7, whereby the arms 12 are adapted to swing clearof the members 37 and come in contact with the members 36 when the limitof upward movement is reached, as clearly shown in Figs. 5 and 6, thedownward movement of the arms 12 being arrested by the same coming incontact with the portion 3 of the bracket.

The construction illustrated in Figs. 5, 6, 7, and 8 involves the sameprinciples as that illustrated in the preceding figures, but shows adifferent way of carrying out the same idea and also provides a cheaperand simpler form of belt-guide.

It will thus be apparent that the belt-guide hereinabove described issusceptible of changes in the form, proportion, and minor details ofconstruction, and I therefore reserve the right to make such changes asproperly fall Within the scope of the appended claims.

Having thus described the invention, what I claim as new is 1. In adevice of the character described, the combination with a belt-wheel andbelt, of guide-wheels rotatable in planes transverse to the belt-wheel,each provided with a flange adapted to embrace a margin of the belt, andmeans to move 'said wheels toward and from the belt-wheel.

2. The combination with a belt-pulley, of a belt-guide comprising arock-shaft parallel to the pulley-shaft, arms adjustable on therockshat't, and guide-rollers mounted on journals at an angle to saidarms and adapted to be moved thereby toward and away from thebelt-pulley and to lie on opposite sides of the pulley-rim and close tothe side edges of said rim.

3. The combination with a belt-pulley, of a belt-guide comprising arock-shaft parallel to the pulley-shaft, arms on said shaft havingjournals extending at an angle thereto, and circumferentially-flangedguide rollers mounted on said journals and adapted to be moved towardand away from the belt-pulley and to lie at opposite sides of and closeto the side edges of the rim of the belt-pulley.

4. Thecombination with a belt-pulley, of a belt-guide comprising arock-shaft parallel to the pulley-shaft, guide-rollers carried by saidrock-shaft and adapted to be moved toward and away from the belt-pulley,and to lie at opposite sides of and close to the rim of the pulley, anda stop for limiting the movement of the guide-rollers in oppositedirections.

5. The combination with a belt-pulley, of a belt-guide comprising arock-shaft parallel to the pulley-shaft, guide-rollers carried by saidrock-shaft and adapted to be moved toward and away from the belt-pulleyand to lie at opposite sides of and close to the side edges of the rimof the pulley, and stops for limiting the movement of the rock-shaft inopposite directions, said stops being adjustable on the rock-shaft.

6. The combination with a belt-pulley, of a belt-guide comprising abracket, a base-plate adjustable on the bracket, a rock-shaft parallelto the pulley-shaft, and guide-rollers carried by said rock-shaft andadapted to be moved toward and away from the belt-pulley and to lie atopposite sides of and close to the side edges of the rim of the pulley.

7. The combination with a belt-pulley, of a belt-guide comprising arock-shaft parallel to the pulley-shaft, arms on said rock-shaft, guide-rollers jou rnaled on said arms and adapted to be moved therebytoward and away from the belt-pulley and to lie on opposite sides of thepulley-rim and close to the side edges of said rim, an operating bar orrod connected to one of said arms, a guide or housing through which saidguide or bar is adapted to slide, and a tension-spring engaging said rodor bar.

8. The combination with a belt-pulley, of a belt-guide comprising arock-shaft parallel to the pulley-shaft, arms on said rock shaft, guiderollers journaled on said arms, and adapted to be moved toward and awayfrom the belt-pulley and to lie at opposite sides of and close to theside edges of the pulley-rim, an operating-bar provided with notches, aslotted guide or housing through which said bar slides, a lip forengaging the notches of the operating-bar, and a spring within the guideor housing for maintaining an engagement between said lip and notches.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH L. CRISLER.

Witnesses:

WV. J. BARNES, C. L. HARRIsoN.

